Is this a video course?

No. This is an interactive, slide-based learning platform. Each lesson has rich text, animated diagrams, live code editors, and quizzes. You learn by reading, interacting, and doing, not by watching videos passively.

How long do I have access?

Forever. Both pricing tiers are one-time payments with lifetime access. This includes all current 766 lessons and any future content we add.

What level of experience do I need?

None. We start from absolute basics like 'What is latency?' and build up to distributed consensus protocols. The Foundation level assumes zero prior knowledge of system design.

How much does the system design course cost?

7.99 US dollars for lifetime access globally, or 499 Indian rupees for lifetime access in India. One-time payment, no subscription, no hidden fees. 11 lessons are free with no signup required.

What technologies are covered?

Everything from DNS and load balancers to Kubernetes, Kafka, distributed databases, consensus protocols, stream processing, security architecture, and observability. We cover principles and real-world implementations used at Netflix, Google, Amazon, Uber, Stripe, and more.

Is this useful for system design interview preparation?

Yes. The lessons are structured around the exact topics asked in system design interviews at FAANG and top-tier companies. Interactive diagrams help you practice whiteboard-style explanations. Covers everything from URL shortener design to distributed payment systems.

How is this different from ByteByteGo or Educative?

766 interactive lessons (4x more than most competitors), 16 different diagram types that build step by step, real production examples from Netflix, Google, Amazon, Uber, and Stripe, and lifetime access for a one-time payment of $7.99 instead of annual subscriptions costing 100 to 200 dollars per year.

A team runs their first live DR drill after 18 months. The runbook says 15-minute failover. The drill takes 47 minutes. Three scripts fail due to IAM changes, and the smoke test suite tests endpoints that no longer exist. What does this reveal?

Production configuration drifted away from the runbook's assumptions over 18 months, and only a live execution could surface the gaps, DR plans degrade over time as production evolves. IAM roles change, endpoints are deprecated, connection pool configs are updated. Google SRE estimates roughly 10% effectiveness loss per quarter without drills. The 18-month gap allowed multiple layers of drift to accumulate silently.

A team has one afternoon per quarter for DR practice. They debate between a tabletop exercise and a live production drill. What is the correct approach?

Run the tabletop first to fix documentation gaps, then run the live drill to verify timing and automation under real conditions, Tabletops surface organizational and documentation gaps (who pages the vendor, who holds the KMS key) at very low cost. Live drills prove that the systems and automation actually work under load. Running a live drill without first fixing tabletop findings means spending expensive drill time rediscovering problems that cost nothing to find on paper.

Discord ran a chaos game day where they killed an entire voice region during peak Saturday traffic. They measured 47-second recovery. Stripe limits initial chaos experiments to less than 1% of traffic. What principle drives Stripe's limit?

Blast radius control: the first run of any experiment must be small enough that the drill cannot become the incident, Blast radius limits prevent the drill from causing a real outage. Stripe starts at less than 1% and expands only after three clean cycles. Discord's full-region kill is the result of years of progressive confidence building. You earn the right to bigger blasts by demonstrating recovery at smaller ones.

DR Testing

Name: System Design Masterclass
Availability: InStock

in Reliability Resilience

This lesson is part of the full System Design Masterclass. Unlock it along with 765 other lessons for a one-time payment.

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India

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Foundation lessons free, try before you buy

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“The interactive diagrams alone are worth way more than the price.”

Anish K., Senior Engineer at a Bengaluru startup

All 766 interactive lessons

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Live code editors with real execution

Quizzes with instant feedback

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